3,785 views

Watch
- Search Videos
  
  Advanced search »
- Submit a New Video
Discuss
About
- Try clicking on the various channels to see videos posted to that channel - if you're into music you can click the Music channel to get more music sifts - go on and explore! Use the "hotness" when you have opened the channel link to get videos that have gotten a lot of votes, or use "newness" to have a look at the new sifts.
  When browsing sifts you like, have a look at the Related Posts list to see other related videos, click the tags under the video title to see more sifts tagged with the same tags or have a look at other sifts from the same user in the More Posts By list. If the sifted video is in a play list, have a look at the play list to see other interesting videos the Sift users have linked together.
  Enter the Sift Lounge to chat with online sifters about anything and everything, or read interesting posts in the Sift Talk forum.
  The Top New Videos list is always full of interesting, current videos. It is always recommended that you have a look through the Top New Videos, but also have a look at these:
  - Upcoming Unsifted Videos - active video submissions that neither are published to the front page nor archived to the submitter's personal queue
- Have you seen a really funny, surprising, scary, interesting, cute or in any other way extra good quality video?
  Post and share it here - VideoSift is the best video aggregator on the Web, where we share, discuss, promote, and interact with the best videos out there on the web. Post it here, and share it with the large community of video-interested users. And - you are guaranteed to find more very good videos here already!
  Mind you, we only share videos you discover that someone else has made; if you "self link," by posting a video you have made, have posted or have interests in, you risk the ban hammer - read the posting guidelines before posting. The sift is NOT for promoting your own videos - it is for sharing videos others have made.
  Submit a Video Now »
Login

Su-47 Berkut

(kulpims)
1 decade 5 years 10 months 1 week ago

The Sukhoi Su-47 Berkut (Russian: Су-47 Беркут - Golden Eagle), also designated S-32 and S-37 during initial development, is an experimental supersonic jet fighter developed by Sukhoi Aviation Corporation.
Although the aircraft was build as a testbed for developing fifth-generation technologies, in May 2002 Sukhoi was selected as prime contractor for the next-generation Russian PAK FA fighter programme. Although the SU-47 will be used for the PAK AF program, the design of it will probably be very different.

The Su-47 has extremely high agility at subsonic speeds, enabling the aircraft to alter its angle of attack and its flight path very quickly. It also retains it's high manoeuvrability in supersonic flight.

Maximum turn rates and the upper and lower limits on air speed for weapon launch are important criteria in terms of combat superiority. The Su-47 aircraft has very high levels of manoeuvrability with maintained stability and controllability at all angles of attack.
Maximum turn rates are important in close combat and also at medium and long range, when a mission may involve engaging consecutive targets in different sectors of the airspace.

The high turn rate of the Su-47 allows the pilot to turn the fighter aircraft quickly towards the next target to initiate the weapon launch. The swept-forward wing, compared to a swept-back wing of the same wing area, provides a number of advantages: higher lift to drag ratio; higher capacity in dogfight manoeuvres; higher range at subsonic speed; improved stall resistance and anti-spin characteristics; improved stability at high angles of attack; a lower minimum flight speed; and a shorter take-off and landing distance.

The SU-47's initial engine, the Saturn-Lulka Al-41F thrust vectoring engine was scarcely available, they were reserved for Mikoyan's Article 1.42 tests.
The final engine, the Al-37FU uses fuel instead of hydraulic liquid to drive the nozzles, and can be operated in two modes, automatic and manual. In automatic more, the axi-symmetric nozzles are controlled by the digital fly-by-wire flight control system (FCS).

via: http://www.videocu.lt/news.php?id=55
links: http://www.airforce-technology.com/projects/s37/
http://en.wikipedia.org/wiki/PAK_FA